Spool



Feb. 2o, 1934. R. ETZKORN 1,947,642

SPOOL Filed Feb. 28, 1935 michi..-

j /V j 4 4" Patented Feb. 20, 1934 PATENT OFFICE SPOOL Rudolf Etzkorn,

Oberbruch, near Heinsberg,

Germany, assignor to American Glanzstol Corporation, New York, N. Y., a corporation of Delaware Application February 28,1933. Serial No. 658,889, and in Germany March 5, 1932 2 Claims.

My present invention has to do with a new and novel spool for use in the collection and aftertreatment of artificial filaments.

In the production of artiiicial filaments, spools are used upon which to collect filaments. These filaments are often aftertreated, i. e., desulphurized, decopped, denitrated, deacidified, bleached, washed, etc., on these spools, and then dried. The drying causes a shrinkage and this produces lo great stresses on the winding surfaces of the spools.

One object of the present invention is to provide a spool of the class set forth, upon which a plurality of yarn bodies may be wound.

Another object is to provide a winding surface, provision being made for reinforcing the same.

Still another object is to provide a cheaply constructed spool which is so built that undue stresses from a plurality of yarn bodies wound 2o thereon will not deleteriously affect the winding surfaces thereof.

Other objects will become apparent irom a study of the following speciiication and claims, and of the accompanying drawing, wherein:

Figure 1 is a cross-sectional view of my new type of spool with a plurality of yarn bodies thereon, and

Figures 2 through 5 show specific modications, in cross-section, of various reinforcements which may be used.

Figure l discloses a spool l, perforated at 2, and having a plurality of yarn bodies 3, wound thereon. The spool body is provided at both ends With beads 4 and 4, and with a central rib or raised portion 5. This portion 5 acts to support the spool so that unusual drying, stresses will not deform it. The rib 5 is semi-circular in crosssection.

In Figure 2, a reinforcing rib 6 is provided,

which is deeper than it is wide, while in Figure 3, the rib 7 is shallow and wide. These are two possible modiiications of the rib 5, of Figure 1.

In Figure 4, the rib 8 is compressed at its sides to grip an internal reinforcing ring 9.

A modification of Figure 4 is shown at Figure 5, where the portion 10 of the spool l which is used, as above, for a rib, is reinforced from the interior by the band 11 pressed thereinto.

Many advantages arise from the use of the specio spool structures described. By the use of my improved spools it is now possible to use a winding surface 200 mm. and above in diameter, and to wind a plurality of yarn bodies thereon. This results in a great saving of material, since one spool may now do the work of two or more smaller spools. This is a great advantage when the thousands of spools ordinarily employed are considered.

I-Iaving now set forth my invention as provided by the patent statutes, what I desire to claim is:

1. A sheet-metal spool adapted to be employed for winding a plurality of yarn bodies, comprising, in combination, two cylindrical portions integrally joined to one another, the junction being provided with an upstanding rib, said rib extending circumferentially around the spool and being provided with a ring-like reinforcement gripped by the sides ofsaid rib.

2. A metallic spool adapted to be employed for winding a plurality of yarn bodies, comprising, in

combination, a plurality of cylindrical portions RUDOLF ETZKORN. 

